JackAudio

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601 discussions

[Jack-Devel] [ANN] QjackCtl 0.5.5 - A Black-Friday'18 Release

by Rui Nuno Capela

Wholly greetings! QjackCtl 0.5.5 (black-friday'18) is released! QjackCtl [1] is a(n ageing yet modern, not so 'simple' anymore) Qt [2] application to control the JACK [3] sound server, for the Linux Audio [5] infrastructure. Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: http://sourceforge.net/projects/qjackctl Downloads: http://sourceforge.net/projects/qjackctl/files - source tarball: http://download.sf.net/qjackctl/qjackctl-0.5.5.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.x86_64.rpm - AppImage [7] package: http://download.sf.net/qjackctl/qjackctl-0.5.5-6.x86_64.AppImage Git repos: https://git.code.sf.net/p/qjackctl/code https://github.com/rncbc/qjackctl.git https://gitlab.com/rncbc/qjackctl.git https://bitbucket.com/rncbc/qjackctl.git Change-log: - Old deprecated Qt4 build support is no more. - Graph port sort options added as View / Sort menu. - System tray options now subject to current desktop environment availability. - Also disable Setup / Misc / Other / Save JACK server configuration to (.jackdrc) when JACK D-Bus interface is enabled. - Whether to use server synchronous mode option added to Setup / Settings / Parameters (only applied when JACK D-BUS interface is enabled). - Disable some Setup / Settings / Advanced parameters when JACK D-Bus interface is enabled and vice-versa. - Attempt to power-cycle JACK D-Bus service on demand; - Marked as probably useless anyway, old "H/W Monitor" option (-H) is now being ditched from Setup / Settings / Advanced tab. - Graph port/connections highlighting. License: QjackCtl [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [6]. See also: http://www.rncbc.org/drupal/node/1953 References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [3] JACK Audio Connection Kit http://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [6] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && keep having fun! -- rncbc aka Rui Nuno Capela

6 years, 7 months

[Jack-Devel] pa_process.c, Line 1558 with realtek asio driver

by BJ Raz

I just got the recent drivers for my audio card from Realtek and when I put then into Jackport Audio I get the following error message: Assertion failed! Program: D:\Users\brazg\AppData\Local\Programs\Jack\jackd.exe File: C:\Users\letz\Desktop\Developpements\portaudio-21-11-2012\src\common\pa_process.c, Line 1558 Expression: framesToProcess != 0 Jack main caught signal 22 For some reason the audio device: *ASIO::Realtek ASIO* does this. ᐧ

6 years, 7 months

[Jack-Devel] Looking for visual "Clipping indicator" (linux command line interface)

by Jaime T

Hi all. Is there software that someone could recommend that would provide a visual indicator of clipping occuring in a jack stream? Extra points if the visual indicator remains set until manually reset. Double extra points if the program can run inside a (linux) command-line environment? If there's nothing out there (yet), I'm going to have to try to add something to jack_meter... TIA, Jaime

6 years, 8 months

[Jack-Devel] memory lock

by Fons Adriaensen

Hello all, A simple question: does libjack (try to) lock client memory ? Ciao, -- FA

6 years, 8 months

[Jack-Devel] [jackaudio/tools] 7f0466: Set a dummy process callback so that timebase mast...

by Rui Nuno Capela

Branch: refs/heads/master Home: https://github.com/jackaudio/tools Commit: 7f04668b234572745fd66d0171648c19e0d106ab https://github.com/jackaudio/tools/commit/7f04668b234572745fd66d0171648c19e… Author: Rui Nuno Capela <rncbc(a)rncbc.org> Date: 2018-10-10 (Wed, 10 Oct 2018) Changed paths: M transport.c Log Message: ----------- Set a dummy process callback so that timebase master is effective. (#10) **NOTE:** This service has been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/ Functionality will be removed from GitHub.com on January 31st, 2019.

6 years, 8 months

[Jack-Devel] Adding Microphone Input and Speaker Output to Jack Audio

by thisstatementisfalse

Hi! I recently setup Jack Audio along side Synchronous Audio Router, i made the virtual inputs and outputs i wanted to using Reaper to access asio4alls config with SAR, and setup jack audio to automatically start using SAR, but i am unable to see both my microphone in as well as my headphone out within Jack (via using catia). My Headphones go through a USB dac (iFi iDSD) while my microphone goes to the onboard microphone jack on my computer. What would be the best way to get my microphone in and showing up in Jack / Catia as well as my audio output. All help will be greatly appreciated. Im also on Windows 10 x64 1709. -- Sent from: http://jack-audio.10948.n7.nabble.com/Jackit-f3.html

6 years, 8 months

[Jack-Devel] Edit WAF Script for Experimental Jack Backend

by Christoph Kuhr

Hi *, I am programming on an experimental Jack backend for AVB. I have a single source/header file but I need to link against a C library as well. How would I integrate the backend with the waf script? Thx, Ck

6 years, 9 months

[Jack-Devel] audioadapter: quality setting important when not changing sampling frequency?

by Holger Marzen

Hi all, since I only need one microphone when recording I am happy with my Focusrite Scarlett 2i4. I use the 2i4 for recording and direct monitoring with the line outputs feeding a headphones amp. I use the builtin headphones amp as well, both when recording and for mixing. So far, so good. Then I wanted 2 additional outputs to feed my active speakers (Neumann KH120A plus KH805 sub). Because of my room's damping of the high frequencies (at least compared to my headphones AKG K812) I need an EQ before them. So I use a Scarlett 2i2 for this purpose, with CALF Jackhost and a Calf EQ feeding this outputs. Now I have 2 audio interfaces that can't be synchronized with a wordclock cable. So I have to drive the 2i2 for the speakers in an async way. Since I use this output only for mixing/mastering I can live with some additional latency. I tried several ways to use the 2nd interface: - alsa_out - zita_j2a - audioadapter (jack_load -i "-dhw:2 -q0 -n2 -p128 -r48000" 2i2 audioadapter) The audioadapter is the most robust solution and doesn't crash when I resize jackd's bufsize on the fly, so I'd like to stay with it. As I played around with the quality setting (-q0 ... -q4) I noticed an enormous CPU load with -q4 (sinc) but couldn't hear any differences in audio quality. -q0 sounds as good as -q4. Now my question: When the audioadapter has to resample to the same frequency (from 48000 to 48000), do higher -q settings improve the audio quality? As I understand there is no interpolation needed at all so -q0 would be enough to have a perfect audio quality. Any comments/ideas to this? Regards Holger

6 years, 9 months

[Jack-Devel] [ANN] QjackCtl 0.5.4 - An Early Autumn'18 Release

by Rui Nuno Capela

That's it! QjackCtl 0.5.4 (early-autumn'18) is out! QjackCtl [1] is a(n ageing but still modern, maybe not so 'simple' anymore) Qt [2] application to control the JACK [3] sound server, for the Linux Audio [5] infrastructure. Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: http://sourceforge.net/projects/qjackctl Downloads: http://sourceforge.net/projects/qjackctl/files - source tarball: http://download.sf.net/qjackctl/qjackctl-0.5.4.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.4-33.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.4-33.rncbc.suse.x86_64.rpm - AppImage [7] package: http://download.sf.net/qjackctl/qjackctl-0.5.4-5.x86_64.AppImage Git repos: https://git.code.sf.net/p/qjackctl/code https://github.com/rncbc/qjackctl.git https://gitlab.com/rncbc/qjackctl.git https://bitbucket.com/rncbc/qjackctl.git Change-log: - Graph port-type colors are now configurable (cf. menu View > Colors. - Make Graph nodes (ie. client boxes) transparent for yet some eye-candiness ;). Also keep the (Graph) current selection across port (dis)connections. - Drawing patchbay connector lines as (bezier) curves is now a difinitive and fixed feature (as long as no moreremains from the so called "Cambric explosion era" are still lurking in there). - AppStream metadata updated to be the most compliant with latest freedesktop.org specification and recommendation. - Graph auto-layout improvement for brand new node clients. - Avoid showing setup warning when no server settings have changed. - Fixed JACK D-Bus settings for MIDI driver parameter. License: QjackCtl [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [6]. See also: http://www.rncbc.org/drupal/node/1941 References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [3] JACK Audio Connection Kit http://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [6] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && have fun! (what else?) -- rncbc aka Rui Nuno Capela

6 years, 9 months

[Jack-Devel] Focusrite Scarlett USB interfaces: 48000 preferred over 44100?

by Holger Marzen

Hi all, I have several Focusrite Scarlett USB interfaces: - Solo - 2i2 - 2i4 They work out of the box but I noticed some flaw in either their firmware or ALSA or jackd: - with 48000 I can use much lower buffer sizes (down to 32) as with 44100 (at least 96) - with 44100 I have some slight clicks, about one per minute, sometimes less. Those clicks sound as if an electrical device (refrigerator, lights) was switched on. - with 48000 I have no such clicks. Has anyone made the same experiences? With Scarletts? With other USB-Interfaces? Is jackd or ALSA optimized for multiples of 48000 instead of 44100? Regards Holger

6 years, 9 months

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